JP4017481B2

JP4017481B2 - Printed circuit board connection connector and printed circuit board connection apparatus using the connector

Info

Publication number: JP4017481B2
Application number: JP2002277256A
Authority: JP
Inventors: 正明原澤
Original assignee: JST Mfg Co Ltd
Current assignee: JST Mfg Co Ltd
Priority date: 2002-09-24
Filing date: 2002-09-24
Publication date: 2007-12-05
Anticipated expiration: 2022-09-24
Also published as: JP2004119050A; TW200409408A; AU2003261820A1; US20060019506A1; CN100369331C; WO2004030153A1; TWI277245B; CN1685570A

Description

【０００１】
【発明の属する技術分野】
本発明は、プリント基板接続用コネクタ及びこのコネクタを使用したプリント基板接続装置に係り、詳しくは、強い衝撃力がコネクタハウジングに加わってもプリント基板と接触端子との半田接続部にクラックを発生させないようにしたプリント基板接続用コネクタ及び基板接続装置に関する。
【０００２】
【従来の技術】
従来、複数枚のプリント基板を機械的に結合すると共に、これらプリント基板に搭載された電子部品を電気的に接続する接続手段として、着脱自在な一対の電気コネクタを用い、それらをプリント基板に装着して接続する基板接続装置が知られている（例えば、特許文献１参照。）。
【０００３】
図７は、この特許文献１に記載された一対のプリント基板接続用電気コネクタ及び基板接続装置を示し、一対の電気コネクタがそれぞれプリント基板に装着され、結合された状態の断面図である。
【０００４】
この基板接続用電気コネクタは、一対の電気コネクタ１、６からなり、両者は互いに着脱自在な構造を有している。一方の電気コネクタ１は、接触端子４のコンタクト部４ａを保持するコンタクト部ハウジング２と、このコンタクト部ハウジングとは別体の接触端子４のテール部４ｃを保持するテール部ハウジング３とを備え、コンタクト部ハウジング２に接触端子４のコンタクト部４ａが、テール部ハウジング３に接触端子４のテール部４ｃがそれぞれ挿入され、可撓性連結部４bによりコンタクト部ハウジング２とテール部ハウジング３とが連結されている。なお、接触端子４は、テール部の引出し位置が異なる２種類からなり、それぞれ複数本がテール部４ｄ、４ｄ’が千鳥状に導出されるように両ハウジング２、３に装着された構造を有している。
【０００５】
また他方の電気コネクタ６も、接触端子を保持するハウジング７と、このハウジング内に装着される接触端子８とを備えている。一対の電気コネクタ１及び６は、それぞれがプリント基板５又は９に装着され、その装着は、図７の電気コネクタ１とプリント基板５との接続例に見られるように、接触端子４のテール部４ｄ、４ｄ’がプリント基板５の各開孔に挿入され、プリント基板の裏面において銅箔パターンに半田付け５ａ、５ａ’され、同様に他の電気コネクタ６も別のプリント基板９に半田等により固定されている。
【０００６】
この構成によると、電気コネクタをプリント基板に装着するときに生じる取付け誤差或いは部品の設計上の誤差等により、プリント基板５に対する他方のプリント基板９の位置が予め定められた位置に対して位置ズレしていても、コンタクト部ハウジング２とテール部ハウジング３とが別体に形成され両者が可撓性連結部４ｂで連結されているので、この可撓性連結部４ｂの撓み変形により、このピッチズレを吸収でき両電気コネクタは難なく互いに結合できる。しかも接触端子の可撓性連結部４ｂの撓み変形のみで、ピッチズレを吸収できるので、吸収時の変位荷重を小さくできる利点を有している。
【０００７】
【特許文献１】
実開平６−４４０６３号
【０００８】
【発明が解決しようとする課題】
しかし、この電気コネクタ１は、両コネクタ結合時の位置ズレを吸収できるが、プリント基板５と垂直な方向、すなわちコンタクト部ハウジング２のほぼ真上から障害物等が衝突し、このハウジング部分に強い衝撃力が加わった場合に、この衝撃力により半田取付け部５ａ、５ａ’にクラックが発生することが分った。
【０００９】
即ち、垂直方向からの衝撃力は、コンタクト部ハウジング２から可撓性連結部４ｂ及びテール部ハウジング３を経て、端子部４ｄ、４ｄ’と銅箔パターンとの半田付け部５ａ、５ａ’へ伝達される。すると、この半田付け部５ａ、５ａ’が機械的に最も弱い箇所であることから、この部分に強い衝撃力が伝達され、この衝撃力により半田付け部にクラックが発生し、電気的接触不良の原因になっていた。
【００１０】
この垂直方向からの衝撃力は、プリント基板と平行な方向から加わる衝撃力に比べ、半田クラックが発生しやすいことが多くのフィールドで確認されている。また、この垂直方向からの衝撃力により、可撓性連結部４ｂが永久変形してしまい前述の位置ズレが吸収できないばかりか、他の接触端子との接続も安定せず電気的接触不良の原因ともなっていた。
【００１１】
本発明は、この従来技術が抱える課題を解消するためになされたものであって、その発明の目的は、一対のコネクタハウジングを可動自在に位置決め固定すると共に、プリント基板等への装着を堅固にするプリント基板接続用コネクタを提供することにある。
【００１２】
また本発明の目的は、他コネクタとの位置ズレを吸収すると共に、取付け基板の垂直方向からコネクタハウジングに加わる衝撃力を吸収できるプリント基板接続用コネクタを提供することにある。
【００１３】
更に本発明の目的は、コネクタハウジングに衝撃力が加わったとき相手方コネクタとの接触部に影響を与えることなく安定した接触信頼性をもつプリント基板接続用コネクタを提供することにある。
【００１４】
更にまた本発明の目的は、コネクタハウジングへの接触端子の実装密度を上げたプリント基板接続用コネクタを提供することにある。
【００１５】
更にまた本発明の目的は、プリント基板と接触端子接続部との接続半田付け部にクラック発生を防止するプリント基板接続装置を提供することにある。
【００１６】
【課題を解決するための手段】
本発明のプリント基板接続用コネクタは、コンタクト部と基板接続用端子とをバネ体で連結した接触端子と、この接触端子のコンタクト部を収納する可動ハウジングと、この接触端子の基板接続端子を固定する固定ハウジングとを備え、上記可動及び固定ハウジングに両ハウジングを貫通する貫通孔を設け、この貫通孔に補強ピンを挿通して上記可動ハウジングが上記固定ハウジングに対して所定範囲内で上下動を可能にすると共に、上記可動及び固定ハウジングに上記接触端子を取付け、両ハウジングを所定間隔離して上記バネ体で連結したことを特徴とする。
【００１７】
そして上記バネ体は、衝撃を吸収する可撓性板状体で形成し、その形状をほぼ横Ｕ字状バネ体、又はスプリング状バネ体を一つ乃至複数個直列接続することが好ましい。更に上記可動ハウジングと固定ハウジングとの間隔は、上記バネ体が撓み変形した際に永久変形を起こさない間隔幅にすることが好ましい。
【００１８】
更にまた、上記貫通孔は、前記可動及び固定ハウジングの両端部に形成し、また、上記補強ピンは、その長さが上記可動と固定ハウジングとが所定間隔離して積層された状態で、このハウジングの上下面から所定距離だけ突出する長さにすることが好ましい。
【００１９】
この構成により、補強ピンを固定ハウジングの貫通孔に挿通し、この貫通孔内に補強ピンを固定し、更にこの補強ピンを可動ハウジングの貫通孔へ挿通する。すると、可動ハウジングは補強ピンにより所定の軌道に沿って整列され、固定ハウジングに対して正確な位置決めがなされる。その後、接触端子を可動及び固定ハウジングに装着し、両ハウジングをバネ体で所定間隔離して連結する。
【００２０】
これにより可動ハウジングが補強ピンにより可動方向を規制されているため、特に左右方向の衝撃が発生したときも相手側コンタクトと接触している弾性舌片が開くことがなく安定した接触信頼性を得ることができる。
【００２１】
また、この衝撃力が可動ハウジングのほぼ真上方向から加わっても、衝撃力により可動ハウジングが降下し、この降下とほぼ同時に接続端子のバネ体にも衝撃力が伝達され、このバネ体が撓み、この撓みにより衝撃力が吸収される。このため、接続用端子部への衝撃力が急速に減衰され、接続用端子部がプリント基板に半田付けされている場合に、この半田付け部に大きな衝撃力が加わることなく、半田付け部のクラック発生を防止できる。
【００２２】
また、可動及び固定ハウジングの間隙は、バネ体が撓み変形し該衝撃力を吸収した際に、永久変形しない間隙幅に設定してあるので、衝撃力によりバネ体が損傷することを防止でき、更に、補強ピンは可動ハウジング貫通孔内で遊嵌された状態で挿通されているので、他のコネクタ（図示省略）との接続時に、位置ズレが発生していてもこの位置ズレを吸収できる。
【００２３】
更にまた、補強ピンの下端をプリント基板へ半田付けすることにより、コネクタとプリント基板との結合が堅固になる。プリント基板との機械的結合力が増すことにより、コネクタや基板に水平方向から衝撃力が加わっても、補強ピンによりコネクタがプリント基板に堅固に結合されているので、この補強ピンにより受け止められ、この衝撃力が接触端子に及ぶことがなく、また、他のコネクタとの接続の際に、コネクタ間に位置ズレがあっても、可動ハウジングが上下動するので、自動的に位置ズレを吸収し、接触端子同士のスムーズな接続ができる。
【００２４】
このバネ体によると、強い衝撃力がバネ体に加わっても、可撓性板状体からなるバネ体は撓み変形し、この衝撃力を吸収する。また、ほぼ横Ｕ字状バネ体又はスプリング状バネ体を一つ乃至複数個直列接続してバネ体の個数を選択することにより、コネクタの使用環境に応じて種々の衝撃力に対応できる。
【００２５】
本発明のプリント基板接続用コネクタは、可動ハウジングのコンタクト収納部を複数段の棚体で形成し、各棚体に複数個のコンタクト部を隔離して配列すると共に、上記固定ハウジングに基板接続端子を固定したことを特徴とする。そして上記接触端子は、薄板状体で形成したバネ体及び基板接続用端子の横幅をコンタクト部の幅より幅狭にすることが好ましい。この構成により、複数段に設けられた開孔列の各開孔に、接触端子のコンタクト部を収納すると共に、コンタクト部に連結された接続用端子部を固定ハウジングで固定することができ、複数段の開孔列の配設により、ハウジングへの接触端子の実装密度を上げることができる。
【００２６】
本発明のプリント基板接続装置は、上記の電気コネクタを用い、該電気コネクタの基板接続用端子と補強ピンの一端を半田接続したことを特徴とする。そして、上記補強ピンの他端を電子機器ハウジングに位置決めとして使用することが好ましい。すなわち、補強ピンの突出した部分のうち、下端突出部をプリント基板に固定し、必要に応じて上端部をコネクタを実装する機器と位置決めとして使用する。そうすると、コネクタを実装したプリント基板のユニットを電子機器に位置ズレすることなく配置することができる。
【００２７】
【発明の実施の形態】
以下、本発明の一実施形態を図面に基づいて説明する。なお、本発明は図面に示された実施形態に限定されるものでなく、種々変更できるものである。
図１は、本発明の一実施形態のプリント基板接続用コネクタを示し、同図（Ａ）は該コネクタを正面からみた外観斜視図、同図（Ｂ）は背後からみた外観斜視図、
図２は、図１のコネクタの断面を示し、同図（Ａ）は図１のＡ−Ａ断面図、同図（Ｂ）は同Ｂ−Ｂの断面図、同図（Ｃ）は同Ｃ−Ｃの断面図である。図３は図１のコネクタの可動ハウジングを示し、同図（Ａ）は該ハウジングを正面から見た外観斜視図、同図（Ｂ）は背後から見た外観斜視図、図４は図１のコネクタの固定ハウジングを示し、同図（Ａ）は該ハウジングを正面からみた外観斜視図、同図（Ｂ）は背後から見た外観斜視図である。
【００２８】
このプリント基板接続用コネクタ１０は、可動ハウジング２０と固定ハウジング３０とからなる一対のハウジングと、両ハウジングを連結する一対の補強ピン５０ａ、５０ｂと、両ハウジング内に固定保持される複数個の電気接触端子４０ａ〜４０ｘ、４０ａ’〜４０ｘ’とからなる。両ハウジング２０、３０は、ほぼ細長な直方体状をなして合成樹脂材料により成形され、組立て時に固定ハウジング３０の上に可動ハウジング２０が所定の間隔ｙだけ離して載置されるように、成形時に予め両者を連結部材（図示せず）で連結した状態で一体成形され、成形後にこの連結部材が切除される。勿論、両ハウジングを初めから別々に成形してもよい。
【００２９】
可動ハウジング２０は、長手軸方向の両端にそれぞれ固定基部２２ａ、２２ｂが形成され、この各固定基部にそれぞれ貫通孔２３ａ、２３ｂが設けられる。この貫通孔２３ａ、２３ｂは、後述する補強ピンが挿通される孔であって、補強ピンの外径より若干大きな直径を有し、補強ピンがこの貫通孔に挿入された状態で少なくとも可動ハウジング２０が上下に可動できる大きさに形成されている。
【００３０】
可動ハウジング２０は、また両端の固定基部２２ａ、２２ｂ間の直方体状のハウジングが正面方向へ突出し、この突出部の内部に複数個の接触端子が収納される収納部が形成される。この収納部は、接触端子のコンタクト部を装着する上下２段の棚体と、接触端子のバネ体を収納する溝部とからなる。この収納部は、可動ハウジング２０の背後において、各棚体の上壁面に複数個の接触端子コンタクト部を隔離して配列する一対のリブが複数組２４ａ’〜２４ｘ’、２５ａ’〜２５ｘ’形成され、更に可動ハウジング２０の底壁面に接触端子のバネ体が挿入される複数の溝部２６ａ〜２６ｘが形成される。
【００３１】
また、可動ハウジングの正面は、他のコネクタの接触端子（図示省略）が挿入される複数個の開口２４ａ〜２４ｘ及び２５ａ〜２５ｘと、底壁面に接触端子のバネ体が挿入される複数の溝部２６ａ〜２６ｘが形成される。
【００３２】
固定ハウジング３０は、両端の固定基部３２ａ、３２ｂに補強ピンを挿通する貫通孔３３ａ、３３ｂと、この固定基部の間に接触端子のコンタクト部が収納される複数本の溝部が形成される。この貫通孔は、後述する補強ピンの外径に合わせて形成され、その形状は、円形、楕円形、或いは四角形等、何れの形状でもよい。そして、この貫通孔の内径は、補強ピンの外径とほぼ近接し、この貫通孔に補強ピンが挿入された状態では、補強ピンの外周面が貫通孔の内周面に接しているようにする。また溝部は、固定ハウジングの長手軸方向と直交する方向にほぼ平行に併設され、その形状は、表裏面に連通した溝部と、表面部が覆われた溝部とが交互に配列される。
【００３３】
これらの溝部のうち、溝部３４ａ〜３４ｘは、上記上段棚体に装着される接触端子のバネ体が挿入され、溝部３４ａ’〜３４ｘ’は、上記下段棚体に装着される接触端子のバネ体が挿入される。なお、収納部は、２段の棚体で形成されたが、この段数に限定されるものでなく、１段或いは３段以上の棚体で形成することもできる。
【００３４】
図５は接触端子を示し、同図（Ａ）は可動ハウジングの下段収納部に装着される接触端子の斜視図、同図（Ｂ）は上段収納部に装着される接触端子の斜視図である。可動ハウジングの下段収納部に装着される複数の接触端子４０ａ〜４０ｘは、それぞれ同一形状を有する。そこで、これらを代表して一つの接触端子４０ａについて説明する。
【００３５】
この接触端子は、コンタクト部４１ａと接続用端子４３ａとを連結するバネ体４２ａとからなり、導電性薄板状体から打抜き加工により形成される。バネ体４２ａは、導電性薄板状体で形成され、可撓性を有し、可動ハウジングのほぼ真上方向からこのハウジングに衝撃力が加わったとき、撓み変形し衝撃力を吸収する機能を果たすものである。
【００３６】
コンタクト部４１ａは、薄板状体の一端にあって、平坦舌片４４ａ’と２条のスリット部分から上方へほぼ直角に折曲された弾性舌片と４５ａ、４５ａ’とからなり、両弾性舌片は互いに近接するように屈曲されている。弾性舌片が互いに接近する方向に屈曲されているので、他コネクタのコンタクト部（図示省略）がこの間に挿入されると、弾性舌片４５ａ、４５ａ’及び平坦舌片４４ａ’とで良好な電気的接触を達成できる。なお、コンタクト部の形状は、他コネクタのコンタクト部の形状に合わせ任意の形状に変更できる。これらコンタクト部の形状は、既に公知であるので、説明を省略する。
【００３７】
バネ体４２ａ及び接続用端子４３ａは、平坦部４４ａから屈曲垂下した平坦部４４ａの幅のほぼ半分の幅長を有する細片４７ａを屈曲加工して形成される。この細片４７ａは、平坦部４４ａから屈曲垂下した部分から、図５（Ａ）で左側部が削除された幅長で形成される。バネ体４２ａは、垂下細片４７ａが平坦舌片４４ａ’の方向へ屈曲されほぼ横Ｕ字状バネ体を形成し、横Ｕ字状バネ体が複数個直列接続された２個のバネ体４８ａ、４８ａ’からなる。バネ体４２ａが複数個の横Ｕ字状バネ体４８ａ、４８ａ’で形成されているので、可動ハウジング２０を経由してバネ体４２ａに衝撃力が加わった場合に、横Ｕ字状バネ体が上方から押し潰された状態になり、この衝撃力を吸収する。また衝撃力がなくなると、バネ体４２ａは自己の復元力によりほぼＵ字状に戻り、可動及び固定ハウジングを所定間隔に離すことになる。４６ａは、平坦部４４ａに両側部に形成された舌片の片方を示し、この舌片は可動ハウジングの開孔溝に挿入され、接触端子の位置決め機能を果たす。
【００３８】
また接続用端子部４３ａは、バネ体４８ａ’の途中から屈曲垂下され、プリント基板（図示省略）の開孔に挿入され、端子部が該プリント基板裏面に配線されて銅箔パターンと半田付けできる長さを有している。
【００３９】
また複数個の接触端子４０ａ’〜４０ｘ’は、可動ハウジングの上段収納部に収納される接触端子であって、同一形状を有する。代表して一つの接触端子４０ａ’について説明する。この接触端子４０ａ’は、接触端子４０ａとほぼ同じ形状を有し、異なる点は垂下細片４７ａ’とバネ体４２ａ’の構成にある。そこで、接触端子４０ａと共通するコンタクト部４１ａ’、接続端子部４３ａ’の説明を省略し、異なる部分を説明する。
【００４０】
垂下細片４７ａ’は、平坦部４４ａ’の幅のほぼ半分の幅長を有し、図５（Ｂ）において右側部が削除された形状を有し、接触端子４０ａ、４０ａ’が隣接配設された場合、細片４７ａ’及び前述の細片４７ａは、平坦部４４ａ’、４４ａ，換言すれば、薄状板体の半分の幅で形成されていることから、両細片４７ａ’、４７ａが併設された際、両細片の幅長の合計が薄状板体の幅長及びコンタクト部４１ａ、４１ａ’の幅長さとほぼ同じになり、コンタクト部４１ａ、４１ａ’が可動ハウジングの上下段の開孔に配設されたとき、この各端子用接続部は、このコンタクト部の幅内で固定ハウジングに固定されることになる。従って、高密度で接触端子をハウジングに装着できることになる。
【００４１】
バネ体４２ａ’は、平坦部４４ａ’から屈曲垂下した細片４７ａ’が、更に平坦舌片４４ａ’の方向へ屈曲されほぼ横Ｕ字状バネ体が複数個直列接続された３個のバネ体、４８ａ’’、４８ａ’’’、４８ａ’’’’からなる。この態様においてはＵ字状バネ体が３個直列接続されたことにより、衝撃力をより効率よく吸収できる。
【００４２】
また接続用端子４３ａ’は、バネ体４８ａ’’’’ の途中から屈曲垂下される。その長さはほぼ同じ長さを有するが、その垂下位置が接続用端子とは異なる位置に設けられ、複数個の接触端子がハウジングに装着されたとき、各接続用端子が交互に千鳥状に配設される。
【００４３】
なお、ここに述べたバネ体はほぼＵ字状バネ体であったが、この形状に限定されず、例えばスプリング状バネ体等の任意の形状に変更できる。任意の形状は、既にバネ体として公知であるので説明を省略する。可動ハウジングの上下段の収納部に装着される複数個の接触端子は、それぞれコンタクト部の形状は同じであるが、バネ体及び接続用端子の形状が異なる。
【００４４】
図６は、補強ピンの外観斜視図である。図１にみられる一対の補強ピン５０ａ、５０ｂは、同一形状を有しているので、代表して一つの補強ピン５０ａを説明する。補強ピン５０ａは、ほぼ円柱状をなした棒体であって、金属材料の鍔付ピンを利用する。その形状は、端部に近い位置に膨出して鍔部５２ａが形成され、この鍔部５２ａを境にして先端部５１ａが長く、後端部５３ａが短い長さを有し、先端部５１ａの直径は、各貫通孔２３ａの直径より若干短く、この貫通孔２３ａにこの補強ピン５０ａが嵌挿された状態で、少なくとも可動ハウジング２０がスムーズに上下動できる直径に形成される。なお、鍔部は必ずしも必要でなく、通常の棒状のピンでも問題ない。この実施形態において、補強ピン５０ａは、ほぼ円柱状をなした棒体に形成されているが、本発明にとってその形状は任意的要素である。
【００４５】
また、先端部５１ａの長さは、各貫通孔２３ａに挿入された際に積層された可動及び固定ハウジング２０、３０の高さより長く、この先端部が可動ハウジングの頂部表面より突出し、コネクタが電子機器に取付けられた際に、機器のハウジング（図示省略）との関係で位置決めする機能を奏する長さに設定される。また、後端部５３ａの長さも、プリント基板の開孔（図示省略）に嵌挿され、コネクタを位置決め固定できる長さに設定されている。補強ピンが先端部５１ａ、及び後端部５３ａが可動及び固定ハウジング２０、３０の貫通孔２３ａ、２３ｂに嵌挿され、端部の先端が両ハウジングの表面及び底面から突出している状態が図１に示されている。
【００４６】
次いで、図１及び図２を参照して、コネクタの組立て方法を説明する。
２本の補強ピン５０ａ、５０ｂを固定ハウジングの貫通孔３３ａ、３３ｂ及び可動ハウジングの貫通孔２３ａ、２３ｂにそれぞれ挿通し、固定ハウジングと可動ハウジングとを所定間隔離し、且つ可動ハウジングが固定ハウジングに対して可動可能に積層する。この積層により、固定ハウジングと可動ハウジングとを積層した対向面に溝部が形成される。
【００４７】
この積層された状態で、接続用端子の位置が異なる接触端子４０ａ、４０ａ’を複数本用意し、両ハウジングの背面から、可動ハウジング２０の上下棚体にコンタクト部を収納し、両ハウジング間に形成された溝部に横Ｕ字状バネ体を押込み、固定ハウジングの溝部に接続端子部を挿入し固定する。各接触端子の装着により、両ハウジングは、所定の間隔ｙを開けてバネ体で連結されることになるが、この間隔ｙは両ハウジングが当接された際にバネ体が永久変形を起こさない距離に設定される。また接続端子部４３ａ、４３ａ’が固定ハウジングの底壁面から千鳥状に互い違いに導出されることになる。
【００４８】
このようにして組立てたコネクタをプリント基板（図示省略）に装着する。
プリント基板には、予め補強ピン及び各接触端子の位置に合わせて、補強ピンの下部先端及び接続用端子部が挿入される複数の開孔を設けて置き、これらの開孔に補強ピン及び接続用端子を挿入し、プリント基板に半田接続する。プリント基板と接続用端子部との半田付け接続は図７に示した従来技術と同じである。また、必要に応じて、補強ピンの上端部は使用機器との間で位置決め機能を奏するようにする。
【００４９】
この構成によると、可動ハウジングと固定ハウジングとが、所定の間隔ｙ離してバネ体で連結され、且つ固定ハウジングの両端が堅固な補強ピンにより、固定されているので、可動ハウジングは固定ハウジングに対して正確に位置決めされ、同時に軌道が多少ずれていても修正され、しかも、コネクタを実装した基板ユニットを機器への装着時に補強ピンにより位置決めされる。
【００５０】
また、他のコネクタ（図示省略）との結合時に、位置ズレがあっても、可動ハウジングが固定ハウジングに対して上下動するので位置ズレを簡単に吸収できる。しかも、可動ハウジングの真上から障害物等が衝突し、可動ハウジングに強い衝撃力が加わっても、接触端子のバネ体でその衝撃を吸収して減衰されるので、半田取付け部のクラック発生を防止することができる。更に、可動及び固定ハウジングの間隙ｙは該両ハウジングの間隔を開けて対向面が当接された状態で、バネ体が永久変形を起こさない長さに設定しているので、バネ体に強い衝撃力が加わっても、バネ体が永久変形を起こすことがない。
【００５１】
【発明の効果】
以上説明したように、本発明のプリント基板接続用コネクタは、可動ハウジング及び固定ハウジングが補強ピンにより強固に結合されるので、両ハウジングの左右或いは前後の何れの方向からでも、障害物等が衝突し強い衝撃力が両ハウジングに加わっても、この衝撃力を補強ピンで受け止め接触端子に接触不良等を誘発するような衝撃力が伝達されることがない。
【００５２】
また、この衝撃力が可動ハウジングのほぼ真上方向から加わっても、この衝撃力により可動ハウジングが降下し、この降下とほぼ同時に接続端子のバネ体にも衝撃力が伝達され、このバネ体が撓み、この撓みにより衝撃力が吸収される。このため、接続用端子部への衝撃力が急速に減衰され、該接続用端子部がプリント基板に半田付けされている場合に、この半田付け部に大きな衝撃力が加わることなく、半田付け部のクラック発生を防止できる。
また、可動及び固定ハウジングの間隙ｙは、バネ体が撓み変形しこの衝撃力を吸収した際に、永久変形しない間隙幅に設定してあるので、衝撃力によりバネ体が損傷することを防止できる。
【００５３】
これにより可動ハウジングが補強ピンにより可動方向を規制されているため、特に左右方向の衝撃が発生したときも相手側コンタクトと接触している弾性舌片が開くことがなく安定した接触信頼性を得ることができる。
【００５４】
また、本発明のプリント基板接続装置は、補強ピンの突出した部分のうち、下端突出部をプリント基板に固定し、必要に応じて上端部をコネクタを実装する機器の位置決めとして使用する。すると、積層された可動及び固定ハウジングがプリント基板或いは機器ハウジングに堅固に固定され、両ハウジングの位置ズレ等がなくなり、コネクタの接触不良等を防止できる。
【図面の簡単な説明】
【図１】本発明の一実施形態のプリント基板接続用コネクタを示し、同図（Ａ）は該コネクタを正面からみた外観斜視図、同図（Ｂ）は背後からみた外観斜視図である。
【図２】図１のコネクタの断面を示し、同図（Ａ）は図１のＡ−Ａ断面図、同図（Ｂ）は同Ｂ−Ｂの断面図、同図（Ｃ）は同Ｃ−Ｃの断面図である。
【図３】図１のコネクタの可動ハウジングを示し、同図（Ａ）は該ハウジングを正面から見た外観斜視図、同図（Ｂ）は背後から見た外観斜視図である。
【図４】図１のコネクタの固定ハウジングを示し、同図（Ａ）は該ハウジングを正面からみた外観斜視図、同図（Ｂ）は背後から見た外観斜視図である。
【図５】図１の接触端子を示し、同図（Ａ）は可動ハウジングの下段収納部に装着される接触端子の斜視図、同図（Ｂ）は上段収納部に装着される接触端子の斜視図である。
【図６】図１の補強ピンの外観斜視図である。
【図７】従来技術のプリント基板接続用電気コネクタ及び基板接続装置を示し、一対の電気コネクタがそれぞれプリント基板に装着され、結合された状態の断面図である。
【符号の説明】
１０プリント基板接続用コネクタ
２０可動ハウジング
２２ａ、２２ｂ、３２ａ、３２ｂ固定基部
２３ａ、２３ｂ、３３ａ、３３ｂ貫通孔
３０固定ハウジング
４０ａ〜４０ｘ、４０ａ’〜４０ｘ’ 接触端子
４１ａ、４１ａ’ コンタクト部
４２ａ、４２ａ’ バネ体
４３ａ、４３ａ’ 接続用端子[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printed circuit board connecting connector and a printed circuit board connecting apparatus using the connector. Specifically, even if a strong impact force is applied to a connector housing, a crack is not generated in a solder connection portion between the printed circuit board and a contact terminal. The present invention relates to a printed board connecting connector and a board connecting apparatus.
[0002]
[Prior art]
Conventionally, a plurality of printed circuit boards are mechanically coupled, and a pair of detachable electrical connectors are used as connection means for electrically connecting electronic components mounted on these printed circuit boards, and these are mounted on the printed circuit board. There is known a board connecting device that connects in this manner (for example, see Patent Document 1).
[0003]
FIG. 7 shows a pair of printed circuit board connecting electrical connectors and a circuit board connecting apparatus described in Patent Document 1, and is a cross-sectional view showing a state in which the pair of electrical connectors are respectively mounted on and coupled to the printed circuit board.
[0004]
This board-connecting electrical connector comprises a pair of electrical connectors 1 and 6, both of which are detachable from each other. One electrical connector 1 includes a contact part housing 2 that holds the contact part 4a of the contact terminal 4, and a tail part housing 3 that holds the tail part 4c of the contact terminal 4 separate from the contact part housing. The contact part 4a of the contact terminal 4 is inserted into the contact part housing 2, and the tail part 4c of the contact terminal 4 is inserted into the tail part housing 3, and the contact part housing 2 and the tail part housing 3 are connected by the flexible connecting part 4b. Has been. There are two types of contact terminals 4 with different tail part extraction positions, and a plurality of contact terminals 4 are mounted on the housings 2 and 3 so that the tail parts 4d and 4d 'are led out in a staggered manner. is doing.
[0005]
The other electrical connector 6 also includes a housing 7 that holds contact terminals and a contact terminal 8 that is mounted in the housing. The pair of electrical connectors 1 and 6 are respectively mounted on the printed circuit board 5 or 9, and the mounting is performed as shown in the connection example between the electrical connector 1 and the printed circuit board 5 in FIG. 7. 4d and 4d 'are inserted into the respective holes of the printed circuit board 5, and soldered to the copper foil pattern 5a and 5a' on the back surface of the printed circuit board. Similarly, the other electrical connector 6 is also soldered to another printed circuit board 9 by solder or the like. It is fixed.
[0006]
According to this configuration, the position of the other printed circuit board 9 with respect to the printed circuit board 5 is displaced from a predetermined position due to an installation error that occurs when the electrical connector is mounted on the printed circuit board or a component design error. However, since the contact portion housing 2 and the tail portion housing 3 are formed separately and are connected by the flexible connecting portion 4b, the pitch displacement is caused by the bending deformation of the flexible connecting portion 4b. Both electrical connectors can be connected to each other without difficulty. In addition, since the pitch shift can be absorbed only by the bending deformation of the flexible connecting portion 4b of the contact terminal, there is an advantage that the displacement load at the time of absorption can be reduced.
[0007]
[Patent Document 1]
ACT 6-44063
[0008]
[Problems to be solved by the invention]
However, although this electrical connector 1 can absorb the positional deviation at the time of connecting both connectors, an obstacle or the like collides with a direction perpendicular to the printed circuit board 5, that is, almost directly above the contact portion housing 2, and the housing portion is strong. It has been found that when an impact force is applied, cracks are generated in the solder mounting portions 5a and 5a ′ due to the impact force.
[0009]
That is, the impact force from the vertical direction is transmitted from the contact portion housing 2 to the soldered portions 5a, 5a ′ of the terminal portions 4d, 4d ′ and the copper foil pattern through the flexible connecting portion 4b and the tail portion housing 3. Is done. Then, since these soldering portions 5a and 5a 'are mechanically weakest portions, a strong impact force is transmitted to these portions, and this impact force causes cracks in the soldering portions, resulting in poor electrical contact. It was the cause.
[0010]
It has been confirmed in many fields that the impact force from the vertical direction is more likely to cause solder cracks than the impact force applied from a direction parallel to the printed circuit board. In addition, the impact force from the vertical direction causes the flexible connecting portion 4b to be permanently deformed, so that the above-mentioned positional deviation cannot be absorbed, and the connection with the other contact terminals is not stable, causing the electrical contact failure. It was with me.
[0011]
The present invention has been made to solve the problems of the prior art, and an object of the present invention is to position and fix a pair of connector housings movably, and to firmly attach them to a printed circuit board or the like. Another object is to provide a connector for connecting a printed circuit board.
[0012]
Another object of the present invention is to provide a printed circuit board connecting connector capable of absorbing a positional shift with respect to another connector and absorbing an impact force applied to the connector housing from the vertical direction of the mounting board.
[0013]
It is a further object of the present invention to provide a printed circuit board connection connector having stable contact reliability without affecting the contact portion with the mating connector when an impact force is applied to the connector housing.
[0014]
It is still another object of the present invention to provide a printed circuit board connecting connector having a higher mounting density of contact terminals on the connector housing.
[0015]
Still another object of the present invention is to provide a printed circuit board connection device that prevents cracks from being generated in the connection soldering portion between the printed circuit board and the contact terminal connection portion.
[0016]
[Means for Solving the Problems]
The connector for connecting a printed circuit board according to the present invention fixes a contact terminal in which a contact portion and a terminal for connecting a substrate are connected by a spring body, a movable housing for storing the contact portion of the contact terminal, and the substrate connection terminal of the contact terminal. A fixed housing is provided, and the movable and fixed housings are provided with through holes that penetrate both housings, and a reinforcing pin is inserted into the through holes so that the movable housing is within a predetermined range with respect to the fixed housing. Enable vertical movement In addition, the contact terminals are attached to the movable and fixed housings, and both the housings are separated by a predetermined distance and connected by the spring body.
[0017]
The spring body is preferably formed of a flexible plate-like body that absorbs an impact, and the shape thereof is preferably a substantially U-shaped spring body or one or a plurality of spring-like spring bodies connected in series. Further, it is preferable that the distance between the movable housing and the fixed housing is set to a width that does not cause permanent deformation when the spring body is bent and deformed.
[0018]
Furthermore, the through hole is formed at both ends of the movable and fixed housing, and the reinforcing pin has a length in which the movable and fixed housing are laminated with a predetermined distance therebetween. It is preferable that the length protrudes from the upper and lower surfaces by a predetermined distance.
[0019]
With this configuration, the reinforcing pin is inserted into the through hole of the fixed housing, the reinforcing pin is fixed in the through hole, and the reinforcing pin is further inserted into the through hole of the movable housing. Then, the movable housing is aligned along a predetermined track by the reinforcing pins, and is accurately positioned with respect to the fixed housing. Thereafter, the contact terminals are mounted on the movable and fixed housings, and both the housings are connected to each other with a predetermined distance between them.
[0020]
As a result, the movable housing is regulated in its movable direction by the reinforcing pins, so that the elastic tongue piece that is in contact with the mating contact does not open even when an impact in the left-right direction is generated, and stable contact reliability is obtained. be able to.
[0021]
Moreover, even if this impact force is applied almost directly above the movable housing, the movable housing is lowered by the impact force, and at the same time as this drop, the impact force is transmitted to the spring body of the connection terminal, and the spring body is bent. The impact force is absorbed by this bending. For this reason, when the impact force to the connection terminal portion is rapidly attenuated and the connection terminal portion is soldered to the printed circuit board, a large impact force is not applied to the soldering portion, and the soldering portion Crack generation can be prevented.
[0022]
Further, since the gap between the movable and fixed housing is set to a gap width that does not permanently deform when the spring body is bent and deformed and absorbs the impact force, the spring body can be prevented from being damaged by the impact force. Furthermore, since the reinforcing pin is inserted in a state where it is loosely fitted in the movable housing through-hole, this positional shift can be absorbed even if a positional shift occurs when connected to another connector (not shown).
[0023]
Furthermore, by soldering the lower end of the reinforcing pin to the printed board, the connection between the connector and the printed board becomes firm. By increasing the mechanical coupling force with the printed circuit board, even if an impact force is applied to the connector and the circuit board from the horizontal direction, the connector is firmly coupled to the printed circuit board by the reinforcement pin, so it is received by this reinforcement pin, This impact force does not reach the contact terminals, and even when there is a misalignment between the connectors when connecting to other connectors, the movable housing moves up and down, so the misalignment is automatically absorbed. Smooth connection between contact terminals.
[0024]
According to this spring body, even if a strong impact force is applied to the spring body, the spring body made of a flexible plate-like body is deformed and absorbs this impact force. In addition, by connecting one or more spring U-shaped spring bodies or one or more spring-shaped spring bodies in series and selecting the number of spring bodies, Depending on the usage environment It can respond to various impact forces.
[0025]
The printed circuit board connection connector of the present invention is configured such that the contact housing portion of the movable housing is formed of a plurality of stages of shelves, and a plurality of contact portions are arranged on each shelf so as to be separated from each other. It is characterized by fixing. And the contact terminal is Spring body made of thin plate In addition, it is preferable that the lateral width of the substrate connection terminal is narrower than the width of the contact portion. With this configuration, the contact portion of the contact terminal can be accommodated in each opening of the opening row provided in a plurality of stages, and the connection terminal portion connected to the contact portion can be fixed by the fixed housing. The density of the contact terminals mounted on the housing can be increased by arranging the stepped hole rows.
[0026]
A printed circuit board connection device according to the present invention is characterized in that the above-described electrical connector is used, and the board connection terminal of the electrical connector and one end of the reinforcing pin are solder-connected. The other end of the reinforcing pin is preferably used for positioning in the electronic device housing. That is, of the protruding portion of the reinforcing pin, the lower end protruding portion is fixed to the printed circuit board, and the upper end portion is used as a positioning device and a device for mounting the connector as necessary. If it does so, the unit of the printed circuit board which mounted the connector can be arrange | positioned, without shifting in position in an electronic device.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to embodiment shown by drawing, It can change variously.
FIG. 1 shows a printed circuit board connector according to an embodiment of the present invention. FIG. 1A is an external perspective view of the connector as viewed from the front, and FIG. 1B is an external perspective view of the connector as viewed from behind.
2 is a cross-sectional view of the connector of FIG. 1. FIG. 2A is a cross-sectional view taken along line AA of FIG. 1, FIG. 2B is a cross-sectional view taken along line BB, and FIG. It is sectional drawing of -C. 3 shows a movable housing of the connector of FIG. 1, FIG. 3A is an external perspective view of the housing viewed from the front, FIG. 3B is an external perspective view of the housing viewed from the rear, and FIG. The fixed housing of a connector is shown, The figure (A) is the external appearance perspective view which looked at this housing from the front, The figure (B) is the external appearance perspective view seen from the back.
[0028]
This printed circuit board connection connector 10 includes a pair of housings composed of a movable housing 20 and a fixed housing 30, a pair of reinforcing pins 50a and 50b for connecting the two housings, and a plurality of electrical terminals fixedly held in both housings. It consists of contact terminals 40a-40x, 40a'-40x '. Both housings 20 and 30 are formed of a synthetic resin material in a substantially elongated rectangular parallelepiped shape, and at the time of molding such that the movable housing 20 is placed on the fixed housing 30 at a predetermined interval y during assembly. They are integrally molded in a state in which both are connected by a connecting member (not shown) in advance, and this connecting member is cut off after forming. Of course, both housings may be molded separately from the beginning.
[0029]
The movable housing 20 is formed with fixed bases 22a and 22b at both ends in the longitudinal axis direction, and through holes 23a and 23b are provided in the fixed bases, respectively. The through holes 23a and 23b are holes through which a later-described reinforcing pin is inserted, have a diameter slightly larger than the outer diameter of the reinforcing pin, and at least the movable housing 20 in a state where the reinforcing pin is inserted into the through hole. Is sized to be movable up and down.
[0030]
In the movable housing 20, a rectangular parallelepiped housing between the fixed base portions 22 a and 22 b at both ends projects in the front direction, and a housing portion in which a plurality of contact terminals are housed is formed inside the projecting portion. This storage part is composed of two upper and lower shelf bodies for mounting the contact parts of the contact terminals and a groove part for storing the spring bodies of the contact terminals. In the storage portion, a plurality of pairs of ribs 24a ′ to 24x ′ and 25a ′ to 25x ′ are formed on the upper wall surface of each shelf behind the movable housing 20 so that a plurality of contact terminal contact portions are arranged in isolation. Further, a plurality of groove portions 26 a to 26 x into which the spring bodies of the contact terminals are inserted are formed on the bottom wall surface of the movable housing 20.
[0031]
The front of the movable housing has a plurality of openings 24a to 24x and 25a to 25x into which contact terminals (not shown) of other connectors are inserted, and a plurality of grooves into which spring bodies of the contact terminals are inserted into the bottom wall surface. 26a to 26x are formed.
[0032]
The fixed housing 30 is formed with through holes 33a and 33b through which the reinforcing pins are inserted into the fixed base portions 32a and 32b at both ends, and a plurality of groove portions in which the contact portions of the contact terminals are accommodated between the fixed base portions. This through hole is a reinforcement pin that will be described later. Outer diameter The shape may be any shape such as a circle, an ellipse, or a quadrangle. And the inner diameter of this through hole is Outer diameter When the reinforcing pin is inserted into the through hole, the outer peripheral surface of the reinforcing pin is in contact with the inner peripheral surface of the through hole. The groove portions are provided substantially parallel to a direction orthogonal to the longitudinal axis direction of the fixed housing, and the groove portions communicating with the front and back surfaces and the groove portions covered with the front surface portion are alternately arranged.
[0033]
Of these groove portions, the groove portions 34a to 34x are inserted with spring bodies of contact terminals attached to the upper shelf, and the groove portions 34a 'to 34x' are spring bodies of contact terminals attached to the lower shelf. Is inserted. In addition, although the accommodating part was formed with the shelf of 2 steps | paragraphs, it is not limited to this number of steps, It can also be formed with the shelf body of 1 step | paragraph or 3 steps | paragraphs or more.
[0034]
5A and 5B show a contact terminal. FIG. 5A is a perspective view of a contact terminal attached to the lower housing portion of the movable housing, and FIG. 5B is a perspective view of a contact terminal attached to the upper housing portion. . The plurality of contact terminals 40a to 40x attached to the lower housing portion of the movable housing have the same shape. Therefore, one contact terminal 40a will be described on behalf of these.
[0035]
The contact terminal includes a spring body 42a that connects the contact portion 41a and the connection terminal 43a, and is formed by punching from a conductive thin plate. The spring body 42a is formed of a conductive thin plate-like body, has flexibility, and performs a function of bending and deforming and absorbing the impact force when an impact force is applied to the housing from almost right above the movable housing. Is.
[0036]
The contact portion 41a is composed of a flat tongue piece 44a 'and elastic tongue pieces 45a and 45a' bent at a substantially right angle upward from the slits of the two strips at one end of the thin plate-like body. The pieces are bent so as to be close to each other. Since the elastic tongue pieces are bent in the direction approaching each other, when the contact portions (not shown) of the other connectors are inserted between them, the elastic tongue pieces 45a and 45a ′ and the flat tongue piece 44a ′ are excellent in electric power. Contact can be achieved. Note that the shape of the contact portion can be changed to any shape according to the shape of the contact portion of the other connector. Since the shape of these contact portions is already known, description thereof is omitted.
[0037]
The spring body 42a and the connection terminal 43a are formed by bending a strip 47a having a width that is approximately half the width of the flat portion 44a bent and suspended from the flat portion 44a. The strip 47a is formed to have a width that is obtained by removing the left side portion in FIG. 5A from the portion bent and suspended from the flat portion 44a. The spring body 42a has a hanging strip 47a. In the direction of the flat tongue 44a ' It is bent to form a substantially U-shaped spring body, and is composed of two spring bodies 48a and 48a 'in which a plurality of the lateral U-shaped spring bodies are connected in series. Since the spring body 42a is formed of a plurality of horizontal U-shaped spring bodies 48a and 48a ′, Spring body 42a When an impact force is applied, the horizontal U-shaped spring body is crushed from above and absorbs the impact force. When the impact force disappears, Spring body 42a Returns to a substantially U shape by its own restoring force, and the movable and fixed housings are separated at a predetermined interval. Reference numeral 46a denotes one of tongue pieces formed on both sides of the flat portion 44a, and this tongue piece is inserted into the opening groove of the movable housing and fulfills the contact terminal positioning function.
[0038]
Further, the connecting terminal portion 43a is bent and suspended from the middle of the spring body 48a ′, inserted into an opening of a printed circuit board (not shown), and the terminal portion can be wired to the back surface of the printed circuit board and soldered to the copper foil pattern. It has a length.
[0039]
Further, the plurality of contact terminals 40a ′ to 40x ′ are contact terminals accommodated in the upper housing portion of the movable housing and have the same shape. As a representative, one contact terminal 40a ′ will be described. The contact terminal 40a ′ has substantially the same shape as the contact terminal 40a, and the difference is in the configuration of the hanging strip 47a ′ and the spring body 42a ′. Therefore, the description of the contact portion 41a ′ and the connection terminal portion 43a ′ common to the contact terminal 40a is omitted, and different portions will be described.
[0040]
The hanging strip 47a ′ has a width that is substantially half the width of the flat portion 44a ′, has a shape in which the right side portion is deleted in FIG. 5B, and the contact terminals 40a and 40a ′ are disposed adjacent to each other. In this case, the thin piece 47a ′ and the above-described thin piece 47a are formed in the flat portions 44a ′ and 44a, in other words, half the width of the thin plate member, so that both the thin pieces 47a ′ and 47a are formed. , The total width of both strips is substantially the same as the width of the thin plate and the width of the contact portions 41a and 41a ', so that the contact portions 41a and 41a' are the upper and lower stages of the movable housing. The terminal connection portions are fixed to the fixed housing within the width of the contact portion. Therefore, the contact terminals can be mounted on the housing with high density.
[0041]
Spring body 42a ' The strip 47a ′ bent and suspended from the flat portion 44a ′ In the direction of the flat tongue 44a ' It consists of three spring bodies 48a ″, 48a ′ ″ and 48a ″ ″ which are bent and a plurality of substantially U-shaped spring bodies are connected in series. In this aspect, the impact force can be absorbed more efficiently by connecting three U-shaped spring bodies in series.
[0042]
Further, the connection terminal 43a ′ is bent and suspended from the middle of the spring body 48a ″ ″. Although the length is substantially the same, the hanging position is provided at a position different from the connection terminal, and when a plurality of contact terminals are mounted on the housing, the connection terminals are alternately staggered. Arranged.
[0043]
In addition, although the spring body described here was a substantially U-shaped spring body, it is not limited to this shape, For example, it can change into arbitrary shapes, such as a spring-shaped spring body. Since the arbitrary shape is already known as a spring body, description thereof is omitted. The plurality of contact terminals mounted on the upper and lower storage portions of the movable housing have the same contact portion shape, but the spring body and the connection terminal are different.
[0044]
FIG. 6 is an external perspective view of the reinforcing pin. Since the pair of reinforcing pins 50a and 50b shown in FIG. 1 have the same shape, one reinforcing pin 50a will be described as a representative. The reinforcing pin 50a is a rod having a substantially cylindrical shape, and uses a barbed pin made of a metal material. The shape bulges to a position close to the end portion to form a flange portion 52a. The front end portion 51a is long and the rear end portion 53a is short from the flange portion 52a. The diameter is slightly shorter than the diameter of each through hole 23a, and at least the movable housing 20 can be smoothly moved up and down in a state where the reinforcing pin 50a is inserted into the through hole 23a. In addition, a collar part is not necessarily required and there is no problem even with a normal rod-shaped pin. In this embodiment, the reinforcing pin 50a is formed in a substantially cylindrical rod, but the shape is an optional element for the present invention.
[0045]
Further, the length of the tip 51a is longer than the height of the movable and fixed housings 20 and 30 stacked when inserted into each through hole 23a, the tip protrudes from the top surface of the movable housing, and the connector is electronic. When attached to the device, it is set to a length that provides a function of positioning in relation to the housing (not shown) of the device. The length of the rear end portion 53a is also set to a length that allows the connector to be positioned and fixed by being inserted into an opening (not shown) of the printed board. FIG. 1 shows a state in which the reinforcing pin has a front end portion 51a and a rear end portion 53a inserted into the through holes 23a and 23b of the movable and fixed housings 20 and 30, and the front ends of the end portions protrude from the front and bottom surfaces of both housings. Is shown in
[0046]
Next, a method for assembling the connector will be described with reference to FIGS.
Two reinforcing pins 50a and 50b are inserted into the through holes 33a and 33b of the fixed housing and the through holes 23a and 23b of the movable housing, respectively, and the fixed housing and the movable housing are separated from each other by a predetermined distance. And movably stacked. By this lamination, a groove is formed on the opposing surface where the fixed housing and the movable housing are laminated.
[0047]
In this laminated state, a plurality of contact terminals 40a, 40a ′ having different connection terminal positions are prepared, and the contact portions are accommodated in the upper and lower shelves of the movable housing 20 from the rear surfaces of the two housings. A horizontal U-shaped spring body is pushed into the formed groove portion, and the connection terminal portion is inserted into the groove portion of the fixed housing and fixed. By mounting each contact terminal, the two housings are connected by a spring body with a predetermined interval y, but the spring body does not cause permanent deformation when the two housings come into contact with each other. Set to distance. Further, the connection terminal portions 43a and 43a ′ are alternately led out from the bottom wall surface of the fixed housing in a staggered manner.
[0048]
The connector assembled in this way is mounted on a printed circuit board (not shown).
The printed circuit board is provided with a plurality of openings into which the lower ends of the reinforcement pins and the connection terminal portions are inserted in advance according to the positions of the reinforcement pins and the respective contact terminals, and the reinforcement pins and the connections are connected to these openings. Insert the terminal and solder it to the printed circuit board. The soldering connection between the printed circuit board and the connection terminal portion is the same as in the prior art shown in FIG. Moreover, the upper end part of a reinforcement pin plays a positioning function between use apparatuses as needed.
[0049]
According to this configuration, the movable housing and the fixed housing are connected to each other by the spring body with a predetermined interval y, and both ends of the fixed housing are fixed by the rigid reinforcing pins. At the same time, even if the track is slightly deviated, it is corrected, and the board unit on which the connector is mounted is positioned by the reinforcing pins when the board unit is mounted.
[0050]
In addition, even when there is a displacement when coupled to another connector (not shown), the movable displacement moves up and down with respect to the fixed housing, so that the displacement can be easily absorbed. In addition, even if an obstacle collides from directly above the movable housing and a strong impact force is applied to the movable housing, the impact is absorbed and attenuated by the spring body of the contact terminal, so that cracks in the solder mounting portion are generated. Can be prevented. In addition, the gap y between the movable and fixed housings is set to a length that does not cause permanent deformation of the spring body in a state in which the opposing surfaces are in contact with each other with a gap between the two housings. Even if force is applied, the spring body does not cause permanent deformation.
[0051]
【The invention's effect】
As described above, in the printed circuit board connector according to the present invention, the movable housing and the fixed housing are firmly coupled by the reinforcing pins, so that obstacles and the like collide from both the left and right and front and rear directions of both housings. Even if a strong impact force is applied to both housings, the impact force is received by the reinforcing pins, and the impact force that causes contact failure or the like to the contact terminal is not transmitted.
[0052]
Further, even if this impact force is applied almost from above the movable housing, the movable housing is lowered by this impact force, and the impact force is transmitted to the spring body of the connection terminal almost simultaneously with this drop, and this spring body is Bending, impact force is absorbed by this bending. For this reason, when the impact force to the connecting terminal portion is rapidly attenuated and the connecting terminal portion is soldered to the printed circuit board, the soldering portion is not applied with a large impact force. Generation of cracks can be prevented.
Further, the gap y between the movable and fixed housings is set to a gap width that does not permanently deform when the spring body is bent and deformed to absorb the impact force, so that the spring body can be prevented from being damaged by the impact force. .
[0053]
As a result, the movable housing is regulated in its movable direction by the reinforcing pins, so that the elastic tongue piece that is in contact with the mating contact does not open even when an impact in the left-right direction is generated, and stable contact reliability is obtained. be able to.
[0054]
Moreover, the printed circuit board connection apparatus of this invention fixes a lower end protrusion part to a printed circuit board among the parts which the reinforcement pin protruded, and uses an upper end part as positioning of the apparatus which mounts a connector as needed. Then, the stacked movable and fixed housings are firmly fixed to the printed circuit board or the device housing, and there is no misalignment between the two housings, and connector contact failure and the like can be prevented.
[Brief description of the drawings]
1A and 1B show a printed circuit board connector according to an embodiment of the present invention, in which FIG. 1A is an external perspective view of the connector as viewed from the front, and FIG. 1B is an external perspective view of the connector as viewed from behind.
2 shows a cross section of the connector of FIG. 1, in which FIG. 1 (A) is a cross-sectional view along AA in FIG. 1, FIG. 2 (B) is a cross-sectional view along BB, and FIG. It is sectional drawing of -C.
3 shows a movable housing of the connector of FIG. 1. FIG. 3A is an external perspective view of the housing as viewed from the front, and FIG. 3B is an external perspective view of the housing as viewed from the back.
4 shows a fixed housing of the connector of FIG. 1. FIG. 4A is an external perspective view of the housing viewed from the front, and FIG. 4B is an external perspective view of the housing viewed from the back.
5 shows the contact terminal of FIG. 1, wherein FIG. 5A is a perspective view of the contact terminal mounted on the lower housing portion of the movable housing, and FIG. 5B is the contact terminal mounted on the upper housing portion. It is a perspective view.
6 is an external perspective view of the reinforcing pin of FIG. 1. FIG.
FIG. 7 is a cross-sectional view showing a prior art printed circuit board connecting electrical connector and a printed circuit board connecting apparatus, in which a pair of electrical connectors are respectively mounted on and coupled to the printed circuit board.
[Explanation of symbols]
10 Printed circuit board connector
20 Movable housing
22a, 22b, 32a, 32b Fixed base
23a, 23b, 33a, 33b Through hole
30 Fixed housing
40a-40x, 40a'-40x 'contact terminal
41a, 41a 'contact part
42a, 42a 'Spring body
43a, 43a 'connection terminal

Claims

A contact terminal in which the contact portion and the board connection terminal are connected by a spring body; a movable housing that houses the contact portion of the contact terminal; and a fixed housing that fixes the board connection terminal of the contact terminal. The fixed housing is provided with a through-hole penetrating both housings, and a reinforcing pin is inserted into the through-hole so that the movable housing can move up and down within a predetermined range with respect to the fixed housing. A printed circuit board connector, wherein the contact terminal is attached, the two housings are separated from each other by a predetermined distance and connected by the spring body.

2. The printed circuit board connector according to claim 1, wherein an inner diameter of the through hole has a length substantially close to a diameter of the reinforcing pin.

The printed circuit board connector according to claim 1, wherein the spring body is formed of a flexible plate-like body that absorbs an impact.

4. The printed circuit board connection according to claim 1, wherein the spring body is a substantially U-shaped spring body or one or a plurality of spring-like spring bodies connected in series. Connector.

The printed circuit board connection according to any one of claims 1 to 4, wherein the distance between the movable housing and the fixed housing is a gap width that does not cause permanent deformation when the spring body is bent and deformed. Connector.

6. The reinforcing pin according to claim 1, wherein the reinforcing pin has a length protruding from the upper and lower surfaces of the housing by a predetermined distance in a state where the movable and the fixed housing are stacked with a predetermined distance therebetween. The printed circuit board connector according to any one of the above.

The movable housing is characterized in that the contact housing portion is formed of a plurality of shelves, and a plurality of contact portions are isolated and arranged on each shelf, and a substrate connection terminal is fixed to the fixed housing. The printed circuit board connection connector according to any one of claims 1 to 6.

8. The printed circuit board connector according to claim 7, wherein the contact portion is formed of a thin plate-like body, and the lateral width of the spring body and the substrate connection terminal is narrower than the width of the contact portion.

9. A printed circuit board connection apparatus using the connector according to claim 1 and solder-connecting one end of the substrate connection terminal and the reinforcing pin to a copper foil pattern of the printed circuit board.

The printed circuit board connecting device according to claim 9, wherein the other end of the reinforcing pin is positioned in the electronic device housing.